This is a common phenomenon. It is recommended to replenish electrolytes before exercise. A healthy way to eat is to have dinner at 6 o'clock, but if you want to exercise, don't eat it. It is not good to eat anything. Just drink a drink containing electrolyte. Never eat within two hours before exercise, otherwise it will damage your stomach. Generally, there are spinning bikes from 6: 00 to 7: 00, and it is estimated that 3-4 sessions will be arranged every week. The suggestion is to take a complete riding class, practice equipment and eat at the same time.